Lead-pencil.



L.' c. BENITZ, LEAD -PE NGIL.

(Application med me. 2'1, 1901:,

No. 705,900. Y Patented'luly 29, |902. Y

(No Mods-l.)-

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UNITED STATES PATENT @Friet-3.

LEO C. BENITZ, OE PHILADELPHIA, PENNSYLVANA.

LEAD-PENCIL.

SPECIFICATION forming part of Letters Patent N o. 705,900, dated July29, 1902.

Application filed December 2'7, 1901. Serial No. 87.430. (No model.)

To all wil/0m. it may concern.: q

Beit known that I, LEO C. BENITZ, a citizen of the United States, and aresident of Philadelphia, in the county of Philadelphia and State'ofPennsylvania, have made certain new and useful Improvements inLead-Pencils, of which the following is a specification.

My invention is an improvement in the class of pencils whose leads areadapted to slide freely and are secured in any position to' which theymay be adjusted by means of an elastic device which is arranged to workin frictional contact with the lead. I havel devised an improvementwhereby the lead is held veryrmly against movement in an upwarddirection, but maybe readily drawn out when required, and is alsoprevented from rotation on its axis, as hereinafter set forth.

In the accompanying drawings, Figure 1 is a face view of the inner sidesof the longitudinal halves of a. Wooden pencil-body, which are formedwith grooves and enlargements thereof according to myinvention, a leadwith an elastic band or ring being shown arranged in the groove of oneof saidhalves. Eigj is a perspective view of a section of the lead withthe elastic band applied. Fig. 3 is an enlarged cross-section on theline 3 3 of Fig. 1. Fig. 4 is an enlarged longitudinal section of aportion of one of the halves of the pencilbody. Fig. 5 isvan enlargedlongitudinal section of a portion of a pencil constructed according tomyinvention. Fig. 6 is a longitudinal section of a pencil embodying amodification. Y

In Fig. 1 the numerals 1 and 1 indicate the two like longitudinal halvesof the Wooden body of the pencil. Each of them is provided with aninternal lengthwise half-round groove 2 to form when the parts 1 1 areput together a cylindrical socket or opening for an ordinary cylindricallead 3. The latter is adapted to fit in the socket so closely as toprevent it from wabbling or. moving laterally therein' a square bottomand being tapered in an upward direction, as shown. The detainer 5 is arubber vband or ring, which encircles the lead 3 and clasps it firmly.In any case the band 5 is made of such thickness that it cannot beforced up or down beyond the limits of the tapered socket 4. It is thuspractically an elastic holder for the lead.

It will be seen that when the lead 3, with detainer .5 applied, isplaced in the pencilbody 1 1, as shown in Figs. 1 and 5, the leadcannot' beforced upward, since the greater the pressure on its point themore will the detainer 5 be compressed in the tapered upper portion ofthe socket 4, and hence the more iirmly will it clasp the lead, and yetwhen traction is applied to the lead 3 it may be drawn out of the body 11, as required, since the lower edge of the band or ring 5 will thenrest upon the square base orshoulder of the socket 4, and thus be causedto slide easily upward on the lead. In brief, by the construction andcombination of parts `shown-the lead 3 is held firmly and yet may bedrawn out easily, while rotation on its vaxis is impossible.Further,therevis no projection or protuberance on the body of thepencil, as required when a slide'of the usualkind is employed.

In Fig. 6 a modified adaptation of the same principle is illustrated,but one of the longitudinal halves of a pencil-body being provided witha tapered socket and the detainer 5a being a strip or small block ofrubber ink place of a band or ring.

IHaving thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

' 1. A pencil-body having a lengthwise opening provided near the pointwith an enlarge- Ward, and a rubber band fitted in` said socket, asshown and described.

' 2. A pencil-body having a lengthwise opening which is enlarged nearAthe point and formed with a flat baseand upward taper, and a lead, andencircling elasticband arranged in the enlargement of the opening,substantially as shown and described.

3. A pencil comprising a body having a lengthwise opening which isenlarged at one point and tapered upward,and an elastic piece held inthe enlargement of the opening and ment forming a socket which i-stapered up- IOO ing which is enlarged near the point, to form Y a cavityhaving a dat base and tapered np- Ward from such base, and adapted forreception of an elastic lead-detainer, as shown and described.

' LEO o'. BENITZ.

` Witnesses:

AMos W. HART, SoLoN C. KEMON.

